We all have dream of being skinny and looking like someone we admire, but is their size the right size for your body. You must know your BMI. BMI is a heuristic measure of body weight based on a person's weight and height. Though it does not actually measure the amount of fat on the body, it is used to estimate a healthy body mass based on a person's height, assuming an average body composition. Due to its ease of measurement and calculation, it is the most widely used diagnostic tool to identify weight problems within a population, usually whether individuals are underweight or overweight. It was invented between 1830 and 1850 by the Belgian polymath Adolphe Quetelet during the course of developing "social physics". Body mass index is defined as the individual's body weight divided by the square of his or her height. The formula universally used in medicine produce a unit of measure of kg/m2. BMI can also be determined using a BMI chart.
BMI Chart
| Category | BMI ranges |
| Severely underweight | less than 16.5 |
| Underweight | from 16.5 to 18.4 |
| Normal | from 18.5 to 24.9 |
| Overweight | from 25 to 29.9 |
| Obese Class I | from 30 to 34.9 |
| Obese Class II | from 35 to 39.9 |
| Obese Class III | over 40 |
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